#VU11819 Use-after-free error in QEMU - CVE-2017-13711

Vulnerability identifier: #VU11819

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-13711

CWE-ID: CWE-416

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
QEMU
Client/Desktop applications / Virtualization software

Vendor: QEMU

Description

The vulnerability allows an adjacent attacker to cause DoS condition on the target system.

The weakness exists in the Slirp networking implementation due to use-after-free error when a Socket referenced from multiple packets is freed while responding to a message.  An adjacent attacker can cause the service to crash.

Mitigation
Install update from vendor's website.

Vulnerable software versions

QEMU: All versions

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=1486400

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.